/**
  * Make a Collection of Persistence Capable objects persistent
  *
  * @param pcs Collection of Persistence Capable objects
  */
 public Collection makePersistentAll(Collection pcs) {
   checkStatus();
   return pm.makePersistentAll(pcs);
 }
 /**
  * Make an array of Persistent Capable objects persistent
  *
  * @param pcs Array of Persistent Capable objects
  */
 public Object[] makePersistentAll(Object... pcs) {
   checkStatus();
   return pm.makePersistentAll(pcs);
 }